I agree.
I'm not saying you down play the threat, but you have to realize that children are not adults. Almost everything is a new experience to them. And they do not have the tools in order to deal with the emotions.
I was pretty annoyed when my partner's 2 kids came home from school in a complete tizzy over the presidential election. I'm not sure if it was from their friends or their teachers. But they were practically crying, thinking everything was going to fall apart.(It wasn't from either of us)
You have to be very careful about how and what you tell to kids. Especially since something like the presidential election or climate change just isn't something they can truly have an affect on yet.